166064660 has 24 divisors (see below), whose sum is σ = 349518120. Its totient is φ = 66276864.

The previous prime is 166064651. The next prime is 166064671. The reversal of 166064660 is 66460661.

166064660 = T₈₅ + T₈₆ + ... + T₉₉₈.

166064660 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 17322244 + 148742416 = 4162^2 + 12196^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 166064660.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56 + ... + 18224.

It is an arithmetic number, because the mean of its divisors is an integer number (14563255).

Almost surely, 2^166064660 is an apocalyptic number.

166064660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166064660 is an abundant number, since it is smaller than the sum of its proper divisors (183453460).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

166064660 is a wasteful number, since it uses less digits than its factorization.

166064660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18635 (or 18633 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 35.

The square root of 166064660 is about 12886.6077770684. The cubic root of 166064660 is about 549.6578147000.

The spelling of 166064660 in words is "one hundred sixty-six million, sixty-four thousand, six hundred sixty".